175 entries under doubt topic. ×

2
bicker(verb, meet, attack, oppose, dispute)
2
blast(verb, oppose, criticize, dispute)
2
canvass(verb, go, promote, exact, deny)
2
cavil(dislike, object, opposition, protest)
2
censure(noun, charge, dislike, blame, disagreement)
2
contravene(verb, oppose, criticize, ignore, dispute)
2
disaffirm(verb, oppose, criticize, dispute, deny)
2
disbelieve(verb, dispute, question, hesitate)
2
dislike(noun, disagreement, opposition, protest)
2
enquire(verb, dispute, examine, question)
2
fear(verb, dispute, question, hesitate)
2
grievance(dislike, insult, opposition, protest)
2
misdoubt(verb, dispute, question, hesitate)
2
misgive(verb, dispute, question, hesitate)
2
quibble(verb, deny, question, contest)
2
refuse(verb, object, protest, disagree)
2
reluctance(dislike, opposition, protest, objection)
2
smell a rat(expression, idiom, dispute, question)
2
vacillate(verb, dispute, object, question)
2
waver(verb, dispute, object, question)
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APASmart Define. (2016). challenge thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/challenge/thesaurus/synonyms
ChicagoSmart Define. 2016. "challenge thesaurus" https://smartdefine.org/challenge/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, challenge thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/challenge/thesaurus/synonyms>.
MLASmart Define. "challenge thesaurus" 1 April 2016. Web. 23 September 2026. <https://smartdefine.org/challenge/thesaurus/synonyms>